GRAPHICAL AND WKB ANALYSIS OF NONUNIFORM BRAGG GRATINGS

被引：76

作者：

POLADIAN, L

机构：

[1] Optical Fibre Technology Centre, University of Sydney

来源：

PHYSICAL REVIEW E | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.48.4758

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A deeper insight into the relationship between the shape of a slowly varying nonuniform Bragg grating and its reflectance spectrum is obtained through a qualitative graphical analysis of the local photonic band gaps in the grating and a quantitative WKB (or phase-integral) approximation of the grating fields. Three different gratings-a linearly chirped grating, a moire grating, and a Gaussian tapered grating-are analyzed in detail to illustrate the power of the technique. The results are in excellent agreement with the exact numerical results obtained via coupled-mode analysis.

引用

页码：4758 / 4767

页数：10

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